what volume of water (in ml), initially at 54.3 C, needs to be mixed with 146ml of water, initially at 29.1 C, so that the final temperature of the water is 35.2 C? Assume that the density of the water remains constant over the above temperature range? ? mL

A 40.4 g piece of hot iron is placed in 152.3 g of water with an initial temperature of 24.7°C. The temperature of the combination rises to 25.6°C. What was the initial temperature of the iron? The specific heat of iron is 0.449 J/g°C. Please give your answer to one decimal place.

When a 43.0 g piece of aluminum was placed in 250. g water at 20.4 degrees C, the temperature raised to 26.8 degrees C, what was the initial temperature of the aluminum?

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If 80.0 g of aluminum initially at 70˚C is dropped into 250.0 mL of water the temperature of the water rises to 22˚C. What was the initial temperature of the water? The specific heat of aluminum is 0.215 cal/g˚C.

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A sample of copper was heated to 275.1 °C, then placed into 450 g of water at 21.0 °C. The temperature of the water rose to 29.7 °C. How many grams of copper were in the sample?

The specific heat of liquid mercury is 0.140 J g1 c-1. How many joules of heat are needed to raise the temperature of 16.94 g of mercury from 15.0 °C to 34.2 °C? Keep the answer with 2 decimal places. Do not write unit in answer. Type your answer...

Can you answer this with an explaination please?

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